South Twin Sister
Weather Forecast, United States

Upper Curtis Glacier and Mount Shuksan

Mount Shuksan

 

Days 0-3 South Twin Sister Weather Summary:

Moderate rain (total 13mm), heaviest on Wed afternoon. Warm (max 25°C on Wed afternoon, min 11°C on Fri night). Wind will be generally light.

Days 3-6 South Twin Sister Weather Summary:

Heavy rain (total 22mm), heaviest during Sun night. Warm (max 23°C on Sun afternoon, min 8°C on Mon night). Wind will be generally light.

AM PM night AM PM night AM PM night AM PM night AM PM night AM PM night
partially cloudy
thunderstorm
thunderstorm
partially cloudy
partially cloudy
clear
light rain
light rain
partially cloudy
partially cloudy
partially cloudy
clear
clear
clear
rain showers
partially cloudy
partially cloudy
rain showers
Wind km/h
5 WSW5
10 W10
5 S5
10 SW10
10 WSW10
5 S5
10 SW10
10 WSW10
5 SSE5
5 W5
10 W10
5 E5
5 WSW5
5 WSW5
5 WSW5
10 SW10
15 WSW15
5 S5
some clouds risk tstorm risk tstorm some clouds some clouds clear light rain light rain some clouds some clouds some clouds clear clear clear rain shwrs some clouds some clouds rain shwrs
See all weather maps
Rain
Rain mm
- 7 4 - - - 1 1 - - - - - - 20 - - 1
Snow
Snow cm
- - - - - - - - - - - - - - - - - -
High °C
24 25 22 19 21 19 13 15 15 14 19 18 20 23 20 12 14 12
Low °C
22 25 16 17 21 12 13 15 11 12 17 13 16 22 10 10 13 8
Chill °C
24 25 22 19 21 19 13 15 15 14 19 18 20 23 20 11 13 11
Freezing level m
3800 3800 3650 3600 3550 3350 3150 2850 2900 3500 3800 3950 3800 3850 3050 2300 2250 2000
Sea lvl3000ft6000ft9000ft12000ft15000ft
mountain backdrop
1212128985445889111011016171611131178771010121513454242522192119131515141918202320121412
Sunrise
5:03 - - 5:05 - - 5:05 - - 5:05 - - 5:05 - - 5:05 - -
Sunset
- 9:14 - - 9:14 - - 9:14 - - 9:14 - - 9:14 - - 9:14 -

This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.

Live conditions reported by 5 closest weather stations

Weather StationTemp.WeatherWind
Cloud
Visibility
Cloud / Visibility
Lyman
19 km S
155m alt.
2 hours ago
21° C
Dry
0
Calm
(0 kph at 123).
Deming
25 km WNW
102m alt.
38 minutes ago
-
2
Calm
(2 kph at 142).
Bellingham
25 km WSW
198m alt.
52 minutes ago
21° C
Dry
0
Calm
(0 kph at 45).
Bellingham
29 km W
71m alt.
54 minutes ago
23° C
Dry
3
Calm
(3 kph at 315).
Bellingham
32 km W
130m alt.
3 hours ago
14° C
Dry
2
Calm
(2 kph at 125).

* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones. We also include passing Ship data if it is recorded close to South Twin Sister and within an acceptable time window.